I could condense you could condense he could condense we could condense you could condense they could condense
V-ing form
I could be condensing you could be condensing he could be condensing we could be condensing you could be condensing they could be condensing
Perfect
I could have condensed you could have condensed he could have condensed we could have condensed you could have condensed they could have condensed
V-ing perfect
I could have been condensing you could have been condensing he could have been condensing we could have been condensing you could have been condensing they could have been condensing
Negation
Simple form
I couldn't condense you couldn't condense he couldn't condense we couldn't condense you couldn't condense they couldn't condense
V-ing form
I couldn't be condensing you couldn't be condensing he couldn't be condensing we couldn't be condensing you couldn't be condensing they couldn't be condensing
Perfect
I couldn't have condensed you couldn't have condensed he couldn't have condensed we couldn't have condensed you couldn't have condensed they couldn't have condensed
V-ing perfect
I couldn't have been condensing you couldn't have been condensing he couldn't have been condensing we couldn't have been condensing you couldn't have been condensing they couldn't have been condensing
Interrogative form
Simple form
could I condense? could you condense? could he condense? could we condense? could you condense? could they condense?
V-ing form
could I be condensing? could you be condensing? could he be condensing? could we be condensing? could you be condensing? could they be condensing?
Perfect
could I have condensed? could you have condensed? could he have condensed? could we have condensed? could you have condensed? could they have condensed?
V-ing perfect
could I have been condensing? could you have been condensing? could he have been condensing? could we have been condensing? could you have been condensing? could they have been condensing?
Interro-negative form
Simple form
couldn't I condense? couldn't you condense? couldn't he condense? couldn't we condense? couldn't you condense? couldn't they condense?
V-ing form
couldn't I be condensing? couldn't you be condensing? couldn't he be condensing? couldn't we be condensing? couldn't you be condensing? couldn't they be condensing?
Perfect
couldn't I have condensed? couldn't you have condensed? couldn't he have condensed? couldn't we have condensed? couldn't you have condensed? couldn't they have condensed?
V-ing perfect
couldn't I have been condensing? couldn't you have been condensing? couldn't he have been condensing? couldn't we have been condensing? couldn't you have been condensing? couldn't they have been condensing?